package org.anyin.gitee.cloud.center.gateway.config;

import cn.dev33.satoken.reactor.filter.SaReactorFilter;
import org.anyin.gitee.cloud.center.gateway.filter.GatewayAuthFilter;
import org.anyin.gitee.cloud.center.gateway.filter.GatewayRequestIdFilter;
import org.anyin.gitee.cloud.center.gateway.filter.factory.ValidateImageCodeGatewayFilterFactory;
import org.anyin.gitee.cloud.lib.core.cache.CacheTemplate;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;

@Configuration
public class FilterConfig {
    /**
     * 请求ID过滤器
     */
    @Bean
    public GatewayRequestIdFilter gatewayRequestIdFilter(){
        return new GatewayRequestIdFilter();
    }

    @Bean
    public GatewayAuthFilter gatewayAuthFilter(){
        return new GatewayAuthFilter();
    }

    @Bean
    public SaReactorFilter saReactorFilter(){
        return new SaReactorFilter();
    }
    /**
     * 图片验证码内置过滤器
     */
    @Bean
    public ValidateImageCodeGatewayFilterFactory validateImageCodeGatewayFilterFactory(CacheTemplate cacheTemplate){
        return new ValidateImageCodeGatewayFilterFactory(cacheTemplate);
    }

    /**
     * 跨域过滤器
     */
    @Bean
    public CorsWebFilter corsWebFilter(){
        CorsConfiguration config = new CorsConfiguration();
        // 允许cookies跨域
        config.setAllowCredentials(true);
        // #允许向该服务器提交请求的URI，*表示全部允许，在SpringMVC中，如果设成*，会自动转成当前请求头中的Origin
        config.addAllowedOriginPattern("*");
        // #允许访问的头信息,*表示全部
        config.addAllowedHeader("*");
        // 预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
        config.setMaxAge(18000L);
        // 允许提交请求的方法类型，*表示全部允许
        config.addAllowedMethod("OPTIONS");
        config.addAllowedMethod("HEAD");
        config.addAllowedMethod("GET");
        config.addAllowedMethod("PUT");
        config.addAllowedMethod("POST");
        config.addAllowedMethod("DELETE");
        config.addAllowedMethod("PATCH");
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        source.registerCorsConfiguration("/**", config);
        return new CorsWebFilter(source);
    }
}
